Nut-lock.



No. 767,694. PATENTED AUG. 16, 1904, W. JARRELL.

' NUT LOCK.

APPLICATION FILED APR. 22, 1904.

N0 MODEL.

UNITED STATES Patented August 16, 1904.

PATENT OFFICE.

WILLIAM JARRELL, OF FORT SMITH, ARKANSAS, ASSIGNOR OF ONE- HALF TOROBERT A. ROWE AND STYLES T. ROWE, OF GREENWOOD,

ARKANSAS.

' NUT-LOOK.

SPECIFICATION forming part of Letters Patent No. 767,694, dated August16,1904.

Application filed April 22 1904. Serial No. 204,358. (No model.)

To all whomit may concern.-

Be it known that I, WILLIAM JARRELL, a resident of Fort Smith, in thecounty of Sebastian and State of Arkansas, have invented certain new anduseful Improvements in Nut- Locks; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

My invention relates to an improved nutlock, the object of the inventionbeing to provide improvements of this character which will securely holdthe nut, preventing possibility of its accidental turning, and whichwill not mar or injure the nut or bolt in any way, but permit itsremoval and reuse, if desired.

With this object in view the inventionconsists in certain novel featuresof construction and combinations and arrangements of parts, as will bemore fully hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figures 1 and 2 are views in sideelevation, illustrating my improvements in locked and unlocked position.Fig. 3 is a horizontal sectional View through the rail and lock devices,and Fig. i is a view of the washer-plate removed.

1 represents a railroad-rail, 2 a fish-plate thereagainst, and 3 myimproved washer-plate beside the fish-plate.

4 is a bolt passed through openings in rail 1, fish-plate 2, andwasher-plate 3 and has an ordinary nut 5 screwed thereon againstwasherplate 3 and secured against turning by looking mechanism on plate3, which will now be described.

Pivotally secured to plate 3 is an arm 6, adapted to lie against a flatface of nut 5 and be held in such position by a flat spring 7, whichlatter is secured to a beveled portion 8 on plate 3, and the plate iscut away, as shown at 9, beneath the spring to allow the latter to bemoved inward and permit arm 6 to swing over the same when the nut isbeing removed or tightened.

The operation of my improvements is as follows: The washer-plate 3 isplaced beside fish-plate 2 and bolt 4 passed through the openings inrail 1, fish-plate 2, and washerplate 3. Spring 7 is forced inward andarm 6 swung to one side, as shown in Fig. 2, to permit the nut 5 to befreely turned to tighten the same on the bolt. When the nut is screwedhome, arm 6 is moved over against aflat side face thereof, when spring 7will move outward against the side of the arm and prevent any returnmovement thereof, thereby securely locking the nut and preventingpossibility of its accidental turning.

While I have described my improved nutlock as applied to a rail, it isto be understood that I do not restrict myself to such use, as the lockmight be employed for a great many other uses, and I do not restrictmyself to the precise details set forth, but consider myself at libertyto make such slight changes and alterations as fairly fall within thespirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is i 1. A nut-lock, comprising a washer-plate,

.a pivoted arm on said plate adapted to be swung to a position againstafiat side face of a nut, and a flat spring secured to the plate andadapted to spring out behind the arm and hold it in such lockingposition.

2. A nut-lock, comprising a washer-plate, a pivoted arm on said plateadapted to be swung to a position beside a flat side face of a nut, aflat spring secured to a beveled portion of the washer-plate andnormally in position with its end behind the arm to hold it in itslocking position, and said washer-plate cut away to permit inwardmovement of the spring and the swinging of the arm over the spring awayfrom the nut.

3. The combination with a rail, a fish-plate thereagainst, awasher-plate beside the fishplate, a bolt passed through openings in therail, fish-plate, and washer-plate, and a nut screwed onto the boltagainst the washer-plate, specification in the presence of twosubscribof an arm pivoted to the washer-plate and (1 ing witnesses.locate beside the nut, and a spring on the Washer-plate having its endin the path of the WILLIAM JARRELL' 5 swinging movement of the arm tosecure it Witnesses:

against the nut. F. L. J OINER,

In testimony whereof I have signed this J. W. JOINER.

